v3.7.0.1
Warranty (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Product Warranty Accrual [Roll Forward]      
Balance at beginning of period $ 48,422 $ 39,810 $ 40,426
Current year provisions 17,852 19,735 18,413
Costs incurred (15,945) (13,998) (16,015)
Foreign currency translation adjustment (4,213) 2,875 (3,014)
Balance at end of period $ 46,116 $ 48,422 $ 39,810